Flight Cochin International Airport departs from Kochi Cochin International Airport at 02:35 and arrives at Riyadh King Khaled International Airport at 05:30.
The flighttime is about 5h 25m. The distance travelled ("as the bird flies"): 3359 Km. So the average speed is roughly 620 Km.
There is an 2.5 hour time difference between Kochi and Riyadh